DC Brushless Motor Driver IC PT301EA, PT301ED PWM Speed Controller Applications Package: SOT-28 Single coil DC brushless motor. Traditional double coil DC Brushless motor DC 1.5V~6.5V. FG(Divide 1) for Four Poles fan FG(Divide 2) for Eight Poles fan D Features 1 2 GND 3 O1 4 EAYWW HE E SOT-28 O2 GND 8 FG 7 PWM 6 VDD 5 HIN Y: Year WW: Week E:PT-301E A:Divide 1 D:Divide 2 A PWM speed control Motor lock protection Built-in protection circuit for transient output Frequency Generation output Low power dissipation and high driving efficiency Ultra-low start voltage e L Pin Description Name Pin MIN NOM MAX VCC 6 A2 0.70 0.80 0.90 Gnd 2/3 A1 0.00 - 0.15 A 1.00 1.10 1.30 O1 b 0.25 0.30 0.40 O2 C 0.10 0.15 0.20 D 2.80 2.90 E 1.60 HE SYMBOLS Input Devices Hall IC Specifications C A2 A1 b Unit: mm DIMENSIONS IN MILLIMETERS Description Type DC power supply P DC ground G 4 First output pin O 1 Second output pin O Hin 5 Hall IC signal input I 3.00 PWM 7 PWM control input I 1.80 2.00 FG 8 Tacho meter output(Frequency O 3.00 2.60 2.80 e - 0.65 - L 0.10 - 0.60 Generation) Pin Description P: Power, G: Ground, O: Output, I: Input Absolute Maximum Ratings (Ta = 25 C) Symbol Parameter Maximum supply voltage Conditions V CC max Ratings Unit 6.5 V *1 mW Allowable power dissipation Pd 350 Operating temperature Ta -30 ~ +100 Storage temperature Ts -55 ~ +150 Output current I 0ut O C O 400*2 max C mA *1:Reduced by 3.4mW for each increase in Ta of 1 over 45 When mounted on a 50mm x 50mm x 1.6mm glass epoxy board. *2:Should not exceed Pd. Any and all PROLIFIC products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your PROLIFIC representative nearest you before using any PROLIFIC products described or contained herein in such applications. PROLIFIC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all PROLIFIC products described or contained herein. PROLIFIC TECHNOLOGY INC. 7F, No.48, Sec.3, Nan Kang Rd., Nan Kang, Taipei, 115, Taiwan Ver. 1.2E -1- Date:Sept. 2002 DC Brushless Motor Driver IC PT301EA, PT301ED Recommanded operating conditions Parameter Supply Voltage Symbol M i n. Typ . Max. Units V DD 1.5 5 6.5 V Electrical Characteritics(Ta = 25 C,Vdd=5V) Parameter Output Voltage Symbol Test Condition Low RL=10@5V High RL=10@5V Output breakdown voltage Supply Current Driving Current FG supply voltage FG flow-in current FG output voltage Hin Input Voltage Min. Typ. 0.48 Max. Units 0.5 V VDD-1.1 VDD-1 V 11 12 V Output open (O1, O2 no load) 10 RL=10@5V 360 379 396 mA mA RL=12@5V 316 330 342 mA RL=15@5V 266 276 285 mA RL=30@5V 150 153 155 mA RL=47@5V 99 100 101 mA RL=100@5V 48 49 11 50 12 10 0.3 VDD 0.5 100 VDD 0.5 100 500 mA V mA V V V uA V V uA KHz 0.25 1.75 0.33 2.28 sec sec Pull-high resistor is 470ohm@5V Pull-high resistor is 470ohm@5V High Low VDD -1.2 High Low VDD -1.2 GND Hin input current PWM Input Voltage GND PWM Input current PWM Operation Frequency Motor lock timing Driving +/-30% Stop +/-30% Ver. 1.2E 0.17 1.22 -2- Date:Sept. 2002 PT301EA, PT301ED DC Brushless Motor Driver IC Rotation Frequency The PT301Ex driver IC generates a FG signal for frequency calculation. In general application, the Fan IC will generate a signal to indicate the rotation frequency of different for each motor. When the motor is stopped, the FG signal will pull high to indicate the stop of the motor was stopped. Digital PWM Speed Control PT301Ex applies the Pulse Width Modulation (PWM) to control motor speed. PT301Ex can use the PWM input pin to control the motor speed. When the PWM is high, the driver IC will drive the motor coil. On the other hand, when the PWM is low, the driver IC will stop driving the motor coil. PWM HIN O1 O2 High High Low High Low High Low High Low Low Low Low Low Low Lock Protection In order to protect the motor and reduce the power sipation. dis When the motor contacts the outside force, the Fan IC when stop ivingdrthe coil after the motor is lock over 0.25 seconds and restar ts the motor after stop the motor 1.75 seco nds. Figure -2 shows the timing diagram betw een the hall input signal and driver state. Whenever the motor stops er 0.25 ov second by outside force, the Fan IC will shutdow n to stop the driving output, and after 1.75 seconds, the Fan IC will turn onain. ag Hin 0.25sec On Driver Off 0.25sec 1.75sec T Fig 2. Lock Protection Ver. 1.2E -3- Date:Sept. 2002 PT301EA, PT301ED DC Brushless Motor Driver IC The driver IC architecture block diagram is showed as Figure-3 Vcc Fan Lock Detection O1 Lock Timing Control O2 Driver Timing Control Hin Driver FG FG PWM Speed Control PWM Gnd Fig. 3. Driver IC Architecture Application circuits 1. Signal coil R1 Hall IC CLK Duty Control Vcc O1 Hin O2 PWM Gnd FG R2 C1 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R1: Depend on the Hall IC spec. R2: 470 ohm ~ 4.7K ohm C1: 0.22uf(Optional) Ver. 1.2E -4- Date:Sept. 2002 PT301EA, PT301ED DC Brushless Motor Driver IC Application circuits 2. Double coil R1 Hall IC Vcc O1 Hin O2 PWM Gnd CLK Duty Control R2 FG C1 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R1: Depend on the Hall IC spec. R2: 470 ohm ~ 4.7K ohm C1: 0.22uf (Optional) R1 Hall IC Vcc O1 Hin PWM Gnd CLK Duty Control R2 O2 FG C1 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R1: Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm C1: 0.22uf (Optional) Ver. 1.2E -5- Date:Sept. 2002 PT301EA, PT301ED DC Brushless Motor Driver IC Application circuits High driving application: Ra Hall IC Vcc Hin R1 O1 R3 C1 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm O2 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R2 PWM FG Gnd CLK Duty Control R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm Ra: Depend on the Hall IC Specification R1, R2: Depend on driving current R3: 470 ohm ~ 4.7K ohm C1: 0.22uf (optional) V supply R0 V reference 5V zener Hall IC Ra Vcc R1 O1 Hin R2: 470 ohm ~ 4.7K ohm R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm O2 CLK Duty Control R3 R1:Depend on the Hall IC Specification PWM C1 R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R2 FG R1:Depend on the Hall IC Specification Gnd R2: 470 ohm ~ 4.7K ohm C2 C3 R1:Depend on the Hall IC Specification R1:Depend on the Hall IC Specification R2: 470 ohm ~ 4.7K ohm R2: 470 ohm ~ 4.7K ohm Ra: Depend on the Hall IC Specification R0: Depend on the power dissipation and the driving ability R1, R2: Depend on the external NPN driving ability R3: 470 ohm ~ 4.7K ohm C1: 0.22uf (optional) C2,C3: 0.22u~5u (optional) Ver. 1.2E -6- Date:Sept. 2002 PT301EA, PT301ED DC Brushless Motor Driver IC D 2 GND 3 O1 4 FG 7 PWM 6 VCC 5 HIN Y: Year WW: Week EDYW W E:PT301E A:Divide 1 D:Divide 2 8 EDYW W GND EAYWW 1 HE E SOT-28 O2 A L DIMENSIONS IN MILLIMETERS NOM MAX A2 0.70 0.80 0.90 A1 0.00 - 0.15 A 1.00 1.10 1.30 b 0.25 0.30 0.40 C 0.10 0.15 0.20 D 2.80 2.90 3.00 E 1.60 1.80 2.00 HE 2.60 2.80 3.00 e - 0.65 - L 0.10 - 0.60 Ver. 1.2E Pin Description Name Pin VCC 6 Gnd 2/3 O1 4 O2 1 Hin 5 PWM 7 FG 8 Description Type DC power supply P DC ground G First output pin O Second output pin O Hall IC signal input I PWM control input I Tacho meter output(Frequency O Generation) Pin Description P: Power, G: Ground, O: Output, I: Input -7- EDYW W MIN EDYW W e Unit: mm SYMBOLS C A2 A1 b 3000pcs./Reel Date:Sept. 2002